Kris Goldsmith, seen at the Russell Senate Office Building in Washington, D.C., has cataloged and flagged about 100 questionable pages that have millions of followers.Stephen Voss for The Wall Street Journal

Army Veteran Wages War on Social-Media Disinformation

Kris Goldsmith, seen at the Russell Senate Office Building in Washington, D.C., has cataloged and flagged about 100 questionable pages that have millions of followers.Stephen Voss for The Wall Street Journal

Kris Goldsmith’s campaign to get Facebook Inc. to close fake accounts targeting U.S. veterans started with a simple search.

He was seeking last year to gauge the popularity of the Facebook page for his employer, Vietnam Veterans of America. The first listing was an impostor account called “Vietnam Vets of America” that had stolen his group’s logo and had more than twice as many followers.